Improvement in feed-water heaters



UNITED .STATES PATENT OFFICE.

WILLIAM B. CROSS, OF SACRAMENTO CITY, CALIFORNIA.

IMPROVEMENT IN FEED-WATER HEATERS.

Specification forming part of Letters Patent No. 50,459, dated October17, 1865.

To all whom it may concern Be it known that I, WILLIAM B. GEoss, ofSacramento City, in the county of Sacramento and State of California,have invented a new and Improved Feed-Water Heater; and I do herebydeclare that the following is a full, clear, and exact descriptionthereo1",which will enable others skilled in the art to make and use thesame, reference being had to the accompanying drawings, forming part otlthis specification7 in which- Figure l represents a longitudinal centralsection of this invention. Fig. 2 is an end elevation ofthe same whenthe head is removed. Fig. 3 is a transverse section of the same, theline o: x, Fig. l, indicating theplane of section.

Similar letters of reference indicate like parts.

The object ot' this invention is to facilitate the operation of cleaningout a feed-water heater in which the feed-water passes through a seriesot' tubes arranged side by side in a chamber which is heated by theexhaust-steam of the engine. In the interior of these tubes the water,particularly if it carries many foreign parts, is liable to leave adeposit, which obstructs the passage of the water and sometimesinterrupts the operation of the apparatus.

The apparatus which forms the subject-Inatter of this present inventionis composed of a series of small pipes projecting from the interior of achambered head into the water-pipes in combination with a supply and adischarge pipe in such a manner that by opening said supply anddischarge pipes a current of hot water from the boiler is injectednineach of the water-pipes ofthe apparatus, and bythe action ot' this waterall the sediment which may have collected in said pipes is readily blownout and the apparatus is cleaned in a short time and withoutinterrupting the operation of the engine.

A represents a box or case, which is made of sheet iron or any othersuitable material in the form ot' a cylinder or in any other convenientform. It is closed at its ends by two heads, B C, and at a certaindistance from said heads it is provided with transverse partitions a,which support the water-tubes b.' The water to be heated is introducedthrough a suitable pipe in the shell A, and after passing through thetubes b it enters the boiler through a pipe, c, connecting the same withthe head C. The head B connects with the boiler by a pipe, d, and saidhead is provided with a chamber, c, and from its inner plate extend aseries ot' short nozzles, f, one into each of the watertubes b. Theexhaust-steam vpasses in through the pipe g and out through the pipe h,and the pipe t' serves to discharge the condensed Water from the case A.The mud or sediment which may collect in the tubesp is blown out throughthe pipe j.

It' it is desired to clean the apparatus, the mud-pipej is first openedand then the checkvalve in the pipe d is raised, so that a current ofwater from the boiler is injected into each ot' the tubes b through thenozzlesf. By this current of heated water all the sediment which mayhave collected in the tubes b is blown out in a short time, and byclosing the mud-pipe and letting down the check-valve the apparatus isagain in Working order. This whole operation can be carried out Wit-houtstopping the pump or interfering in any Way with the motion ot'theengine, and the boiler can be regularly supplied with Water heated bybeing passed through the tubes in the box A.

I claim as new and desire to secure by Letters Patent- The chamberedhead B, with nozzlef, in combination with the tubes b and box or case A,constructed and operated substantially as and for the purpose described.

WILLIAM B. CROSS.

Witnesses:

SAMUEL Geoss, Trios. H. AUsERoW.

